An algorithm to determine the mechanism of drug distribution in lipid-core nanocapsule formulations

Aqueous solutions of lipid-core nanocapsules are interesting drug delivery systems for passive drug targeting. In this study, we hypothesized that the drug distribution mechanisms in lipid-core nanocapsule formulations could be categorized into six different types. To experimentally determine the type of drug distribution in these formulations, we proposed the use of an algorithm as an innovative strategy. The approach is shown to be a valuable tool to optimize and select formulations intended for drug delivery. The best physico-chemical parameter in terms of predicting the type of distribution was the log D value. In conclusion, the use of the algorithm developed in this study represents a simple and rapid approach through which it was possible to experimentally determine the drug distribution in colloidal formulations for eight drug models.